Captain Witold Pilecki witnessed the darkest chapter in the history of mankind. He was the first to provide the Allies with information about the reality behind the wires of the Auschwitz concentration camp Captain Witold Pilecki witnessed the darkest chapter in the history of mankind. He was the first to provide the Allies with information about the reality behind the wires of the Auschwitz concentration camp Captain Witold Pilecki witnessed the darkest chapter in the history of mankind. He was the first to provide the Allies with information about the reality behind the wires of the Auschwitz concentration camp Captain Witold Pilecki witnessed the darkest chapter in the history of mankind. He was the first to provide the Allies with information about the reality behind the wires of the Auschwitz concentration camp